The incident occurred at about 8:40 p.m. when a car hit a utility pole in the 300 block of Millwood Drive, PG&E spokeswoman Jana Morris said.
The car was driven by 40-year-old Jason Plattner, who was arrested on suspicion of DUI, San Mateo County sheriff's Lt. Ed Barbarini said.
The crash caused a power line to come down and hit a chain-link fence, and the resulting electrical discharge started a grass fire. The accident cut power to about 1,000 customers and caused a small hole in a gas line.
Crews discovered the leak at about 3:15 a.m. and made the necessary repairs later this morning, spokeswoman Tamar Sarkissian said.
Power has been restored to all affected customers, Morris said.